Chinese name (chinese) → Tyrannosaurus Other Chinese name (chinese [other]) → ... Latin literature name (name) → tyrannosaurus Pronunciation (pronounced) → tye-ran-uh-sawr-us Means (meaning) → Generic name: brutal lizards Species name: King Head (order) → saurischia Saurischia Suborder (suborder) → theropoda theropod Class (infraorder) → neotheropoda new theropod tetanurae strong tail dragon avetheropoda birds foot class coelurosauria Coelurosauria maniraptorifromes maniraptorans Shaped tyrannosauroidea Tyrannosaurus superfamily Branch (family) → tyrannosauridae tyrannosaurids Subfamily (subfamily) → tyrannosaurinae Tyrannosaurus subfamily Family (tribe) → tyrannosaurini storm Dragon Genus (genus) → tyrannosaurus tyrannosaurus The type species (type species) → t. rex Tyrannosaurus rex Other species (other species) → ... Error attributable to species (misassigned species) → t. amplus = aublysodon amplus t. bataar = Special Tyrannosaurus t. bataar t. efremovi = Special Tyrannosaurus t.efremovi t. gigantus = t. rex t. imperiosus = t. rex t. lancensis = t. rex t. lancinator = Special Tyrannosaurus t.bataar t. lanpingensis = Special Tyrannosaurus t.lanpingensis t. luanchuanensis = Luanchuan Special Tyrannosaurus t. megagracilis = t. rex t. novojilovi = Special Tyrannosaurus t.bataar t. stanwinstonorum = t. rex t. torosus = daspletosaurus torosus t. turpanensis = Special Tyrannosaurus t.bataar Time (period) → Late Cretaceous late maastrichtian Distribution (found in) → Alberta, Canada, Montana, New Mexico, Colorado, Wyoming Found in strata (stratum) → ... Diet (diet) → meat Typical body length (length) → length of about 6 meters 15 meters Speculated that weight (mass) → 6.5-7 tons Discoverer (discoverer) → Brown (barnum brown) 1902 Named person (first described) → enjoy Liao Si the (osborn), 1905
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Introduction (brief introduction)
In the following presentation, you may wonder why we do not have the full name of the animal. This example, like Tyrannosaurus rex, though more people know it is called Tyrannosaurus Rex, Tyrannosaurus we are called to do. We have two reasons for doing so. First, for some series of animals, there is sufficient other evidence to identify its genus, but could not identify the species of the genus do not. Second, it will give the name of the less likely people feel confused. Although everyone is familiar with the name of the Tyrannosaurus Rex, but to give his full name all the animals is not appropriate. Tyrannosaurus could ever recorded on Earth's largest living carnivorous dinosaurs. It is the latest of a carnivorous, it has sixty jagged edges sharp teeth, some up to 18 cm long. It has huge jaws; just head up to 1.3 meters, it may be able to eat a whole person ─ ─ time around if there are human beings really exist. Tyrannosaurus rex stood taller than two stories high, one can swallow a cow, a very strange little Tyrannosaurus front foot, and summoned up the courage human arm, so some scientists believe that T. rex could not predation, can eat the dead. Tyrannosaurus monster for the whole body seems to be designed to attack other dinosaurs; head long and narrow, muscular cheeks, neck short and thick, strong body. Strong hind legs stout, the tail not too long, you can back straight in order to balance the body, open its mouth, there are about 15 cm of teeth ... ... but a disproportionately small forelimbs, and only two weak fingers. It has been that the T. rex is a heavy, slow animals, but recent studies suggest that T. rex a run up to 40 kilometers per hour, If so, I am afraid that nothing can escape its prey to kill the. [C] The fossil record provides little evidence about the Tyrannosaurus courtship, we can only present a similar behavior of the animals to imagine their courtship display. Was a large predator, it more than any of its prey is far greater. Therefore, it can separate Liaodao its prey and will most likely live a solitary life. (With T. rex and other activities is flawed, because it would reduce the number of prey.) In today's large carnivores like bears and cheetahs similar phenomenon can also be found. On the other hand, despite the public to wander around the dinosaurs, find a mate, while the mother is a clear area of the dinosaur. The next question is how to attract the wandering male female dinosaur dinosaurs? Of food to the public pursuit of the mother T. rex Tyrannosaurus. In the course of animal courtship, these gifts as food, or can be called "love chips" are very important. This sometimes arises from the nest when the female incubates the eggs of dinosaurs will be under the circumstances. She needs to eat to maintain the best condition to lay eggs. Public dinosaurs prove that it can be pretty good for access to food. In this example, has a spin factor: the mother's body than the male Tyrannosaurus Tyrannosaurus large, so as to avoid being the mother of public Tyrannosaurus Tyrannosaurus delights for food eaten at home Tyrannosaurus fed and happy to maintain status. In the imagination of scientists, mating behavior around the body continuously for a while. (Kemo more monitor lizards like the mating of food around.) But in the end the mother dinosaur dinosaurs will fiercely forced to leave the company. Fighting between individuals is a significant feature Tyrannosaurus. Skull and bones of their more or less terrible wounds and bite marks. And we know that among the many examples show that this is not because they were welling up in the body due to the death. We have evidence on the healing (for example, grow new bone), the evidence that the wound is still alive in the animal caused. In 1902, an American collector of dinosaur fossils, Barnum Brown, Montana in the United States Hale Creek found a giant carnivorous animal bones, when he was the staff of the National Museum of History. After two summers, he have been excavated from a hard sandstone matrix. As a heavy bones, so he created a special sled with the horses drag, That the bones transported to a nearby road. - He found the first bones of a Tyrannosaurus Rex! In 1910, Barnum Brown, the expedition team led by Alberta, Canada Red Deer River Valley within the massive collection began. He used a large wooden raft, rowing is a mobile camp on the river to find fossils and excavation. The raft is also the transport of fossil tool, as with the carriage transport will damage the fossil. Brown found there was a very well-protected Styracosaurus, helmet, dragon, and sharp corners, and some dragons dinosaur fossil skeleton fossils skin. Museum in New York, Brown's boss can not wait Osborne named Tyrannosaurus his animals made public, while the installation frame, Brown and Osborne to model the style alive Tyrannosaurus remodeling, but they can not to weigh two tonnes of bones to form the image in their mind - "smart as a beast of a bird," they had to erect and slow to form his appearance, we now think is not correct, in fact, to maintain this error 50 years.
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Raptors Truth
Tyrannosaurus, the scientific name means tyrannosaurs rex tyrant lizard, carnivorous dinosaurs appear at the latest, and most large, most of the more powerful species. Tyrannosaurus probably is the biggest terrestrial carnivore, six thousand million years ago extinction, the end of the Cretaceous. T. rex's head is very large (about 1.2 meters). Strong jaw serrated edges on the teeth long, thick like a huge bird's feet, the fingers having strong claws. And sturdy feet comparison, T. rex's arms and the skull was inversely proportional to the small, shorter than the human hand, according to paleontologists believe that Tyrannosaurus rex may be due to wax only catch with the mouth, forelimbs rarely used, and thus gradually become Short smaller, and thus evolve into standing by the hindlimbs, forelimbs and hind limbs as weapons degradation, which evolved into this strange body structure, Tyrannosaurus Although a large body, bones, heart Queshi Kong, but there are some large head hollow hole, thus making weight loss, easy walk and catch wax. Fourteen meters in length and body height of about 5.5 meters, weighing seven tons, Tyrannosaurus rex tail long and thick, appears to be a strong offensive and defensive weapons, probably often focus on hind legs and tail, suggesting that hindlimb and Last part of the muscle very strong, destructive force more powerful than a tornado! Generally, scholars believe that carnivorous dinosaurs, T. rex is the most brutal dinosaurs, it appears the time is already late age of dinosaurs, about six thousand five hundred years from now. T. rex's body up to fourteen meters, weighs about ten tons, it is very thick rear strong, even with their big hold up is a raw image. From a Tyrannosaurus rex fossil discovered that each of its large and small teeth, some teeth length, much longer than human hands, some as small as a human little finger a tooth from the apex to the base, there are jagged oblique rotation , the ferocious, is evident, a strong jaw amazing crocodile jaws of dozens of maxillary first power sum of all the dinosaurs, T. rex's head is the largest and most powerful, carnivorous animals of this terrible use grows saber-like teeth of the giant jaw, brutally killed a prey, and then reverse the strong neck, would tear down the mouth of the meat. The Xuepentaikou more open scary, which students with two rows of sharp teeth bent inward, each with twenty to thirty centimeters long teeth, once bitten, even has a tough bone body armor is also a large herbivorous dinosaurs will not bear.
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Tyrannosaurus living environment
In the initial stage of the Cretaceous flowering plant in the Raptors dominated the world during the life of the ecosystem, 90% of the leaf fossils are found in North Dakota, in the collection of more than 30,000 fossil leaves, there 90% of the fossils belong to broad leaf plants. Now, in the T. rex were found in the vicinity, there are still times of coniferous plants, such as T. rex and its relatives larch plants, was the scene and Florida or southern Georgia are similar to some of the area tree, about 30 15 m, trunk diameter less than 0.3 meters. Raptors live in an age of the subjects of modern plants have emerged. Tyrannosaurus living environment so do not think strange.
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Tyrannosaurus how evolution?
The earliest ancestor of Tyrannosaurus rex from the late Triassic Eoraptor (eoraptor), it is only 0.9 meters in length, less than 1 m, weighing only 5-7 kg. Pirates of the dragon's lower jaw before the middle without some kind of vegetarian dinosaurs additional connections. But in the middle of the jaw, there is a bend that allows the activities of the jaw joints, bite things when the jaws when the game will be tight vise, while the Raptors have this jaw! It also has some interesting places, such as Eoraptor has five "fingers", and subsequently the carnivorous dinosaurs of the "finger" tends to reduce the number of the, to the last occurrence of T. rex and other large carnivorous dinosaurs, only two "finger" of the. Again, Eoraptor only three vertebrae lumbar support belt with it was small, but the dinosaur was becoming larger and larger, the support of the waist belt to increase the number of vertebrae. So how T. rex evolved from dog-sized monster 13 meters long? For decades, paleontologists have always thought that T. rex is a descendant of the other huge predators, such as Yuelong / Allosaurus (allosaurus), it is the largest, more teeth, the last generation of dinosaurs, carnivorous dinosaur that is the assumption that super- It seems a matter of course, but this is not correct. Yuelong (allosaurus fragilis) for the Jurassic of the largest carnivorous dinosaurs. 11 meters in length, estimated weight of 1.5 to 2 tons of action agile ferocious predators, hunting prey may leap lap, hence the name. Speculated that it would launch a surprise lurking in the plant leaves, strong forelimbs have three claws on the long, as an important weapon, generally medium to large herbivorous dinosaurs for food, is undoubtedly the strongest dinosaur predators, but to the mid-Cretaceous, Yuelong on Earth suddenly disappeared, replaced by the strongest of natural history, hunting land animals - Tyrannosaurus (tyrannosaurus). Tyrannosaurus rex discovered in recent years and a lot of carnivorous dinosaurs are differences are, took its feet as an example, it is striking that many of the third toe is the end of the Cretaceous dinosaur features, but they are small dinosaurs, they are not a large carnivorous dinosaurs we know, such as the ostrich like dragons. Tyrannosaurus rex is a small carnivorous animals, but later evolved into a very large size, and other large carnivorous dinosaurs that they do not have any association, from the anatomical analysis can easily identify those not related to dinosaurs and Tyrannosaurus. The dragon is a turning point in the evolution of T. rex, and other small predatory dinosaurs were different, it is the use of jaws to kill their prey, rather than using the forelimbs. Such adaptive changes caused by the rise of Tyrannosaurus rex and its unique shape, the first from the single long Tyrannosaurus (alectrosaurus), single long slender body, the legs are very long. Evolution to the Alberta Lung (albertosaurus), its head becomes larger, the legs become shorter, and the Alberta Lung Tyrannosaurus similar, but look, when each feature will find it more primitive than the Raptors. In the end who is the nearest relatives of T. rex? Paleontologists believe that there are two possibilities: North America evil Tyrannosaurus (daspletosaurus), Raptors in the eyes of a large bone above the sudden, the evil found in the Montana T. rex fossil, the bone penetration to less prominent in the early Tyrannosaurus him even more evil small. Asia Special Tyrannosaurus (tarbosaurus), originally known as Tyrannosaurus rex Tyrannosaurus special, but the fact is they have a lot of Yi Chu, for example, after connecting the head part of the brain stem.
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Tyrannosaurus: predator or a scavenger?
In the paleontology field into a controversy is whether it is a positive Tyrannosaurus predators. Active predators of the argument: Tyrannosaurus hearing is very special, should be said that the location of the skull is very special, as well as to collect the sound to a specific direction, it is the appearance of the ear or less the same with the other dinosaurs, but its internal structure is has changed dramatically. Thus, Raptors to a wider range can be heard, may be able to hear the other dinosaurs difficult to hear low-frequency sound waves. Speculated that T. rex dinosaur may be issued by the bass (most of the duck-billed dinosaur class) as prey. Also, T. rex's jaws are competent to hunting, like other prey animals, its teeth are curved backwards, the central cusp toward the mouth, which means that, when the struggling prey in the mouth, only can escape to the direction of the throat. Moreover, its teeth have deep roots, which makes teeth strong and not easily broken, but can bite through bone, which is the cause of Tyrannosaurus jaw so deep - more than two-thirds of the tooth is buried in the gums in the . Moreover, the delicate serrated teeth around the front and back sides, and their role as a small hook, serrated piercing the muscle, the hook can be caught in the meat fibers, placing it between the teeth, serrated edge between the tooth cutting edge enough to tear fiber. Eat carrion argument: active predators should be the most well-developed visual system, but not so Tyrannosaurus rex, on the contrary, it is the most developed sense of smell, and well-developed sense of smell, there is no doubt a prerequisite for scavengers. Also, T. rex's enormous size, which is conducive to rush away from hunting those animals.
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Tyrannosaurus how to act?
T. rex is one of the largest carnivorous dinosaurs, before people think T. rex could run swiftly, just as they catch up in the movie Jishi car as much as 72 km per hour, there is little prey to escape the claws . However, in February 28 issue of the British "Nature" magazine, an American research team published their research on Tyrannosaurus movement that determines the physical structure of T. rex could not run them, only 18 to 40 per hour km speed walk. The researchers used computer simulations of different animals move through the length of the legs, athletic stance and other parameters required to estimate the animals run the minimum weight of the leg muscles. Calculations show that the greater weight of the animal, it relies on to run the required two-legged leg muscles the greater the proportion of total body weight. An ordinary chicken, leg muscle weight only reached about 17%. However, a weight of 6 tons of Tyrannosaurus rex, and if it can run, it will be more than the leg muscles of the body weight of the total weight of 80%. The existing land vertebrate leg muscles generally do not reach 50% of body weight. For comparison, the researchers also calculated the size of a Tyrannosaurus rex chicken if you want to run, the leg muscles will account for 99% of body weight - it is almost impossible. The researchers concluded that, Raptors velocity may not exceed 40 km per hour. If you are locked in a Tyrannosaurus rex, run fast enough, then it is possible to escape. For a long time, scientists are predators or scavengers Raptors were the issue is controversial. Some experts say this latest research shows T. rex may depend on scavengers living Tyrannosaurus running slower because of its weaker forearm, not for hunting. But others believe that, Raptors to action should still be able to capture the relatively slow herbivores.
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Tyrannosaurus explore the situation in China
In the Turpan Basin, the location of Vertebrate Paleontology by the Chinese Academy of Sciences 1964-1966, to discover the many dinosaur fossils. Where there is a large, carnivorous dinosaurs - especially Tyrannosaurus. Particular was a large dinosaur meat, and tap into the specimen a total of five teeth with incomplete hip. It belongs to the tyrannosaurids. In the Late Cretaceous in Asia, especially T. rex is a widespread species. In 1972, Luan River County, Henan Province, Song Pa Village Formation in the autumn, to discover five large teeth dinosaurs Dong Zhiming authority named in the Luan River in 1979, Tyrannosaurus (T. rex). Raptors History class is in the ground all the animals, the most ferocious carnivores large and fall of rock is distributed in the Pa Tau Lake County area of Sichuan basin Crest Late Cretaceous strata from purple shale composition, the bottom gravel with brick red
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Introduction (Brief Introduction)
Tyrannosaurus rex (Tyrannosaurus) model species and the only valid species is Tyrannosaurus Rex (Tyrannosaurus rex), also known as Rex Long, Tyrannosaurus rex is the ancient Greek name means "tyrant lizard" in Latin, Italian kind of nickname for the king. Some scientists believe that Asia's Warriors special Tyrannosaurus (Tarbosaurus bataar) is the second T. rex is a valid species, while other scientists believe that T. rex is an independent special case. In addition there are many species tyrannosaurids have been proposed, but they are considered more than a synonym of T. rex, or classified in other genera. As with other T. rex dinosaur families, bipedal dinosaurs, Tyrannosaurus is, a large skull, and by long, heavy tail to maintain balance. Relative to their large powerful hind legs, Tyrannosaurus forelimbs are very small. A long time, Tyrannosaurus rex was that only two fingers, but in 2007 a complete Tyrannosaurus rex found in the fossil, indicating that they may have three fingers. T. rex eating habits is unknown at present: the past, scientists from the T. rex's teeth arrangement and shape to infer that T. rex may have been the top predators of a carnivorous animal, type and angle to hadrosaur dinosaurs for the next Dragon food; but with the bones of Tyrannosaurus scientists to create models to simulate the behavior of their experimental results to make them think the fact is that species of T. rex a scavenger; In addition, even some scientists that did not have enough meat for Tyrannosaurus eat, so most of the time they are vegetarian. These conflicting views, and now has not been a unified conclusion. Although there are other theropod dinosaur Tyrannosaurus size and equivalent to or greater than the tyrannosaurus, Tyrannosaurus rex Tyrannosaurus rex is still the largest animal subjects, but also one of the most famous land-based predators. At present, more than 30 specimens of Tyrannosaurus Rex has been confirmed, including the number of fossils with a high degree of integrity. A large number of fossils of Tyrannosaurus rex material, so that scientists have enough information of Tyrannosaurus physiological levels, including growth patterns and biomechanics, and some researchers have also found soft tissue and proteins. But T. rex's diet, physical activity and speed, which is still controversial. T. rex is on the surface appeared one of the largest carnivorous animals. According to the current best preserved Tyrannosaurus rex fossil "Sue" (No. FMNH PR2081), "Su" and 12.8 meters in length, hip height is 4 meters; this data only to the largest Spinosaurus, there may be found in recent years Giganotosaurus, Carcharodontosaurus, Mapu Long. In the past few years, T. rex's weight estimates vary greatly, from less than 7.2 tonnes to 4.5 tonnes, while the current estimate of 5.4 to 6.8 tonnes more in between. The storm is currently leading the largest known skull, length 1.5 meters. And compared to other theropods, Tyrannosaurus rex skull is very large. Tyrannosaurus rex skull behind the broad, narrow snout. T. rex's eyes toward the front of the eyes, the visual overlap is relatively large, you can see a wider stereo image, the Raptors have a pretty good three-dimensional vision. Tyrannosaurus could ever recorded on Earth's largest living carnivorous dinosaurs. It is the latest of a carnivorous, it has sixty jagged edges sharp teeth, some up to 18 cm long. It has huge jaws; just head up to 1.3 meters, it may be able to eat a whole person ─ ─ time around if there are human beings really exist. Tyrannosaurus rex stood taller than two stories high, one can swallow a cow, a very strange little Tyrannosaurus front foot, and summoned up the courage human arm, so some scientists believe that T. rex could not predation, can eat the dead. Tyrannosaurus monster for the whole body seems to be designed to attack other dinosaurs; head long and narrow, muscular cheeks, neck short and thick, strong body. Strong hind legs stout, the tail not too long, you can back straight in order to balance the body, open its mouth, there are about 15 cm of teeth ... ... but a disproportionately small forelimbs, and only two weak fingers. It has been that the T. rex is a heavy, slow animals, but recent studies suggest that T. rex a run up to 40 kilometers per hour, If so, I am afraid that nothing can escape its prey to kill the. In 1902, an American collector of dinosaur fossils, Barnum Brown, Montana in the United States Hale Creek found a giant carnivorous animal bones, when he was the staff of the National Museum of History. After two summers, he have been excavated from a hard sandstone matrix. As a heavy bones, so he created a special sled with the horses drag, That the bones transported to a nearby road. - He found the first bones of a Tyrannosaurus Rex! In 1910, Barnum Brown, the expedition team led by Alberta, Canada Red Deer River Valley within the massive collection began. He used a large wooden raft, rowing is a mobile camp on the river to find fossils and excavation. The raft is also the transport of fossil tool, as with the carriage transport will damage the fossil. Brown found there was a very well-protected Styracosaurus, helmet, dragon, and sharp corners, and some dragons dinosaur fossil skeleton fossils skin. Museum in New York, Brown's boss can not wait Osborne named Tyrannosaurus his animals made public, while the installation frame, Brown and Osborne to model the style alive Tyrannosaurus remodeling, but they can not to weigh two tonnes of bones to form the image in their mind - "smart as a beast of a bird," they had to erect and slow to form his appearance, we now think is not correct, in fact, to maintain this error 50 years.
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Tyrannosaurus latest discovery
Scientists said the Raptors did not like the movie gave us the impression that dedicated a considerable body of dinosaurs to other challenge. In fact they are deliberately _select_ed to swallow whole prey of juvenile dinosaurs. These findings overturn our previous outside influence some of the ideas generated, and now we know that there are battlements of a huge dinosaur, unlike Steven Spielberg (Steven Spielberg) 1993 年 film "Jurassic Park "described in the big or bigger than that. Devoted to two paleontologists from the same T. rex and other large carnivorous theropod dinosaurs, dinosaur family were studied. Work of the Institute of Vertebrate Paleontology at the Chinese Academy of Sciences expert David Honeywell (David Hone) was born in England, he said, T. rex is not the choice of these terrible attacks on whole body wrapped in scales of adult dinosaurs, but the body is more small, vigilance worse as the prey of juvenile dinosaurs. In his "fossil world (Lethaia)" the magazine wrote: "So a large carnivorous dinosaur theropod dinosaurs like the hunting of large adult size, or the traditional concept of a huge dinosaur is considered to be wrong, or this kind of thing rarely happens. " Honeywell paleontology with Munich Bavarian State Group (Bavarian State Collection for Paleontology), Oliver La Homa special (Oliver Rauhaut) with re-review of the relevant evidence. Although dinosaur nests that the animal has a lot of cubs, but the current lack of juvenile dinosaur fossil. They wrote in the paper: "probably because carnivorous theropod dinosaur preferred prey and swallow up the young dinosaurs, so the file will be the lack of fossils of small dinosaur fossil." They said: "carnivorous theropod dinosaurs, like predators with the present, like the hunt, eat small animals, which makes small animals, especially juvenile dinosaur fossil record is missing." Honeywell told the "Independent" says , the small dinosaur Tyrannosaurus swallow whole, can be absorbed into the store in a small dinosaur bones in the minerals and nutrients.
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Tyrannosaurus truth: predators or the ... ... scavenger?
In the paleontology field into a controversy is whether it is a positive Tyrannosaurus predators. Active predators of the argument: Tyrannosaurus hearing very special, it should be said that the location of the skull is very special, as well as to collect the sound to a specific direction, it is the appearance of the ear or less the same with the other dinosaurs, but its internal structure is has changed dramatically. Thus, Raptors to a wider range can be heard, may be able to hear the other dinosaurs difficult to hear low-frequency sound waves. Speculated that T. rex dinosaur may be issued by the bass (most of the duck-billed dinosaur class) as prey. Also, T. rex's jaws are competent to hunting, like other prey animals, its teeth are curved backwards, the central cusp toward the mouth, which means that, when the struggling prey in the mouth, only can escape to the direction of the throat. Moreover, its teeth have deep roots, which makes teeth strong and not easily broken, but can bite through bone, which is the cause of Tyrannosaurus jaw so deep - more than two-thirds of the tooth is buried in the gums in the . Moreover, the delicate serrated teeth around the front and back sides, and their role as a small hook, serrated piercing the muscle, the hook can be caught in the meat fibers, placing it between the teeth, serrated edge between the tooth cutting edge enough to tear fiber. And more and more evidence that T. rex was a scavenger actually dinosaurs. Tyrannosaurus huge teeth and strong jaws can prove to be the true type of carnivorous dinosaur, strength enough to gnaw the bones, but more than that. Criteria for evaluating predators do not have it. First, the predators should have well-developed front legs, they catch their prey with Ben jumping around when you fight, stand up to quickly after a fall, continue to struggle. The early nineties the twentieth century, the United States paleontologist Jack Horner (Jack Horner) unearthed the first with a complete Tyrannosaurus rex fossil forelimb bones - six thousand five hundred million years ago, "Wang Ke" (Wankel) Tyrannosaurus rex fossil, found in addition to its forelimbs too short, but also extremely out of proportion, the humerus is very long, while the lower arm of the ulna and radius is very short. Through the recovery model that, Raptors claw forelimbs fact, only the Ministry of Road on the outside, the rest being wrapped in muscle. Only allow us to draw a conclusion that it is unable to crawl forelimb, extending less than the mouth, at best, only "scratched his belly used to." It weighed twelve thousand pounds, the focus of 12 feet in height from the ground, over the consequences of degradation of the forelimb is, if it can run too fast, then I am afraid will fall broken ribs and jaw, and even unable to climb up. Horner says T. rex was "not withstand the fall of the animals." Secondly, the two-legged animals, the proportion of the tibia and femur determines the road speed. Horner Tyrannosaurus in the same period by studying the predators of small moving rapidly, "Pirates of the dragon lizard birds" found that the femur is much shorter than the tibia. Tibia short femur length, velocity of natural fast. The "Wang Ke," Tyrannosaurus rex leg bone fossil is part of the tibia than the femur length, this finding can be shown that T. rex is not a slow running mode of operation, that is, walking altogether. Latest unearthed ago sixty-eight million years ago, code-named "G.rex" T. rex fossil tibia and femur length of its equivalent, the proof of strong clues, after three hundred years of evolution, Tyrannosaurus rex running ability has been gradually lost. Finally, active predators in the visual system should be the most developed, but the Raptors are not. Horner found through the brain model, tyrannosaurus poor vision, but the sense of smell is extremely sensitive, research shows that T. rex's olfactory lobe and the ratio of the brain the same with today's vulture. Vulture, a scavenger, and its sense of smell can reach 25 miles away. Vision is not good, it can not hunt at night; and well-developed sense of smell, there is no doubt a prerequisite for scavengers. Let us imagine a bad visual, olfactory developed, slow-moving carnivorous dinosaurs to six thousand million years ago that the world survive? It either starve to death or go snatch - small predatory dinosaurs of the left menu. Terrifying is the key to the survival of scavengers in the snatch competition in the food, you can bluff, to drive away the animals are enjoying the food. Same principle also applies to the Cretaceous competition. T. rex was a scavenger Horner depicts a terrorist, nausea appearance "... ... it's head is red, his face sarcoma, the characteristics of having nausea. It big and smelly and frightening ... ...." Explore the latest research and more and more evidence points to, Tyrannosaurus is more likely to eat mainly meat-eating dinosaurs rot. It does not have the advantage of predators should be, but it has all the characteristics of scavengers. Maybe it does hunt, but it is limited to speeds slower than the weaker it.
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Tyrannosaurus explore the situation in China
In the Turpan Basin, the location of Vertebrate Paleontology by the Chinese Academy of Sciences 1964-1966, to discover the many dinosaur fossils. Where there is a large, carnivorous dinosaurs - especially Tyrannosaurus. Particular was a large dinosaur meat, and tap into the specimen a total of five teeth with incomplete hip. It belongs to the tyrannosaurids. In the Late Cretaceous in Asia, especially T. rex is a widespread species. In 1972, people in the County of Henan Province, Song Ping Luan River Formation in the autumn Pa, to discover five large teeth and dinosaur authority officers Dong Zhiming in 1979, River Crest will be named Tyrannosaurus (T. rex). Raptors History class is in the ground all the animals, the most ferocious carnivores large and fall of rock is distributed in the Pa Tau Lake County area of Sichuan basin Crest Late Cretaceous strata from purple shale composition, the bottom gravel with brick red As in other theropods, Tyrannosaurus rex neck to form a natural S-bend, but shorter and more robust. Tyrannosaurus rex skull length of the spine (hip to the head) of the half, showing their stubby neck muscles must be filled in order to support the huge head. Compared with the body, Tyrannosaurus forelimbs are very small. A long time, Tyrannosaurus forelimbs were that only two fingers, but a recent unpublished study found that T. rex had degraded the third means. The proportion of the body and hind legs, the Tyrannosaurus rex hindlimb was among theropod dinosaurs is one the longest. T. rex's strong hind legs, each foot of which carry about half the weight of elephants. Soles of the feet touch the ground only three toes, metatarsal off the ground. Another post on the claw feet. Tyrannosaurus rex in the metatarsal to rely on long, with both sides of the plantar metatarsal to form the folder type. Ankle joint was simple hinge type; and solid ankle, showing they can walk on rough ground. T. rex's tail is large and heavy, a considerable length about the body, sometimes including more than 40 vertebrae, with head and body balance. To balance the Tyrannosaurus weight, large size, their body's many bones are hollow. This can reduce the body weight, while maintaining the bone strength. In the past, tyrannosaurids be presumed to be a large carnivorous dinosaur Jurassic be related, such as Megalosaurus superfamily under the dragon head with the meat. But the fossil evidence that this group of dinosaurs evolved separately in a very early stage, the Raptors should belong to the more derived clade Coelurosauria. Tyrannosaurus is Tyrannosaurus superfamily, Raptors Branch, and Tyrannosaurus genus of the subfamily. Tyrannosaurus other members of the subfamily includes Asia, North America, the special fear of the dragon and the Tyrannosaurus, the two are sometimes considered a synonym of the genus Tyrannosaurus. T. rex discovered in the same formation found in other fossil tyrannosaurids, initially classified by class on individual projects, including long and large after the slender curved teeth Alberta Lung (Albertosaurus megagracilis), which was established in 1995 as fear of Tyrannosaurus (Dinotyrannus megagracilis) However, these fossils now generally considered to be the individual juvenile T. rex. Found in Montana, a small (60 cm long), but nearly complete skull, may be an exception. The first skull checked Falls White Zoumanigui Er Moer classified in 1946, Lance Gorgon Dragon (Gorgosaurus lancensis), but was later established as a new genus, dwarf Tyrannosaurus. For the effectiveness of dwarf Tyrannosaurus divided into two schools. Many scientists believe that the skull came from a juvenile Tyrannosaurus rex. Tyrannosaurus rex Tyrannosaurus rex dwarf and there are a few differences between, for example, the number of dwarf Tyrannosaurus teeth more, which leads some scientists think that they are independent of the two genera; must wait until further studies or to determine that between the two relationship. Dispute Tyrannosaurus rex skull specimens are located in the Carnegie Museum of Natural History. Allosaurus this reference, and completed plaster model, a big mistake, has now been removed. The first T. rex specimens were classified in two parts composed of the spine (one lost), is found in Edward 德林克科普 years in 1892 and named for the Manospondylus gigas (meaning "great The "+" porous spine "). Osborne in 1917 found that M. gigas and T. rex are similarities, but because of M. gigas spine broken, so Osborne can not determine that they are the same animal. Like all dinosaurs are from the fossil record information on T. rex's biological, such as behavior, color, ecology and physiology, remains unknown. However, over the past 20 years, many new specimens have been found to produce a lot about the growth mode of the tyrannosaurus, biomechanical properties, and metabolic hypothesis. Number of juvenile T. rex specimen identification, allows scientists to record changes in their ontogeny, and then estimate their life span and growth rate. The smallest known specimens of T. rex as "Jordan" (No. LACM 28471), estimated that only 29.9 kg body weight; and the largest specimen "Su" (No. FMNH PR2081), very likely more than 5400 kg weight. Tyrannosaurus bones for histological study shows that "Jordan" death is only 2 years old, and the "Soviet Union" the death of 28-year-old, this data may be close to the maximum age of T. rex. Can test a tissue sample's age, by age and weight of different samples can be drawn out of the growth curve of animals. T. rex's growth curve is S-shaped, juveniles close to 14 years ago, weighing less than 1,800 kg, after they have substantial growth. During this period of rapid growth, the young Tyrannosaurus average increase of 600 kg per year, and for 4 years. After 18 years, the growth curve again stabilized. For example, the 28-year-old "Sue" and a 22-year-old Canadian specimen (No. RTMP 81.12.1) difference of only 600 kg. Recently, other researchers from different organizations to complete the study found that T. rex's growth curve is to slow down in about 16 years of age, confirmed the above results. This sudden change in growth rate may be displayed by physiological maturity, a 16 to 20-year-old Tyrannosaurus rex specimens Montana (No. MOR 1125, also known as "B-Rex") of the femoral medullary tissue, confirmed the assumptions. Medullary tissue is only found in female birds lay eggs on display "B-Rex" is in the breeding season. Tyrannosaurids other dinosaurs have similar growth curve, but the growth rate is slower. More than half of the T. rex specimens reach sexual maturity at six years of death, this growth pattern also exists in other tyrannosaurs, as well as some modern birds and mammals. These animals are characterized by high infant mortality, low mortality and minor body. Increase in mortality after reach sexual maturity, partly because breeding pressure. A study of individual rare juvenile Tyrannosaurus rex Part of the reason is their body's mortality rate is low minors; in this age when a lot of these animals will not die, so do not often fossilized. However, juveniles may be rare because of the incomplete fossil record, or who prefer to find more fossils, more remarkable fossils. With the increase of those samples, the scientists found that Tyrannosaurus rex individuals began to change, and found that they can be divided into two modes or forms, similar to some other theropod species. One of the more sturdy form, and the other a more slender. Morphological studies suggest that several representatives of these two forms of sexual dimorphism in Tyrannosaurus rex have, but more sturdy form is generally considered female. For example, the number of thick specimens appear wider pelvis, may be used to accommodate the spawning channel. Thick forms on the first section caudal chevron bone narrow, it is clear that for a birth canal to accommodate the reproductive system, which features crocodile who also appear. In recent years, evidence of sexual dimorphism has been weakened. A 2005 study found that the original claim that the crocodile chevron bone is characterized by features of sexual dimorphism is wrong, so have similar characteristics of Tyrannosaurus sex dispute. "Su" in Section 1 has full size on caudal chevron bones, and "Sue" is a very stout individual, show that this feature can not be used to identify these two forms. Because the specimen was found in Tyrannosaurus Saskatchewan to New Mexico area, the differences between individuals may be more suitable for display of geographical differences, rather than sexual dimorphism. These differences may be related to the age of individuals may be more sturdy than the older individuals. Like many bipedal dinosaurs, Tyrannosaurus rex in the past is portrayed as a tripod gait, the body and the ground was at least 45 degree angle between the tail dragging on the ground, like kangaroos. The tripod gait originated in 约瑟夫莱迪 hadrosaur made in 1865 reconstruction, this is the first time described the dinosaur biped animals. American Museum of Natural History in New York City, a former curator, Henry Fair Velde Osborne (Henry Fairfield Osborn), that these dinosaurs are standing upright gait, so in 1915 the first complete Tyrannosaurus rex fossil discovered , put forward the concept of straight gait. So in the next nearly a century, the T. rex fossil is molded into the straight gait, was only re-created until 1992. By 1970, scientists upright gait that is not correct, because there is no existing animal can maintain this attitude, this attitude will lead to dislocation, or a few loose joints, such as: hip, between the head and spine joints. Although the upright gait is not correct, the United States Museum of Natural History specimens still affect a lot of film and painting, for example, Yale Peabody Museum of Natural History's famous mural "The Age Of Reptiles", by Rudolph Zha Linge drawn. Until the 90's, the film "Jurassic Park" will be more proper to convey to the general public Tyrannosaurus gait. The current film, painting, and museum models, will be portrayed as Tyrannosaurus nearly parallel with the ground the body posture, and tail raised high, to balance the weight of the head. In 2006, researchers at the University of Alberta Eric Kesineifu Li (Eric Snively), the Royal Tyrrell Museum of Donald Henderson (Donald Henderson), and the University of Calgary paleontologist Road Gefei Phillips (Doug Phillips) to the skull and teeth tyrannosaurids number compared with other species. In one of the structural mechanics for the study of dinosaur skulls, the scientists used CT scans of their teeth bending strength, bending strength of the nose and the skull and other projects were examined. Results of the study published in the journal "Paleontology of Poland" (Acta Palaeontologica Polonica) on. Sinei Fu Li's research team found that, Raptors Côte some fixed, arched nasal bones, compared with other carnivorous dinosaurs of the nasal bones are not fixed even more solid. When biting prey to other carnivorous dinosaurs, their heads may be slightly separated from the bones; and Tyrannosaurus fixed nasal bones, then all the bite force is transmitted to the prey. In addition to the team other than Sinei Fu Li, a paleontologist at Cambridge University Aimililei Field (Emily Rayfield) presented Dr. nasal bone increased the fixed bite force in Tyrannosaurus assumptions. A medium-sized Tyrannosaurus rex skull, larger than even the more robust carnivorous dinosaur; such as sub-Carcharodontosaurus Tyrannosaurus head length 1.5 times the power of the skull is smaller than Tyrannosaurus rex . When the Tyrannosaurus jaw bite, it will produce a bite force of 20 Newton. T. rex's neck muscles can be a second, twisting the head 45 degrees, can be flung a 50 kg person five meters high. However, this data is Si Neifu research team established a conservative estimate of Tyrannosaurus muscle strength. When first discovered in 1905 when T. rex fossil, found in the humerus is the only part of the forelimb. _Set_ up in 1915 in the first Tyrannosaurus rex skeleton, Osborne will be a long three-finger forelimb as an alternative, similar to Allosaurus. However, a year ago, 劳伦斯赖博 established and a close relative of Tyrannosaurus rex named Gorgon dragons, Gorgon dragons with short front legs, hands with two fingers. Gorgon dragon that shows T. rex had similar forelimbs should be, but this hypothesis has not been proved a long time, until the 1989 discovery of the first complete Tyrannosaurus rex fossil forelimb (number MOR 555, also known as "Wankel rex" .) "Su" fossil also includes a complete forelimb. Compared with the body, Tyrannosaurus forelimbs are very small, only 1 meter length. But they are not signs of organ, and has traces of muscle attachment, showing Tyrannosaurus forelimbs have considerable power. As early as 1906, Osborne had already found this feature, he speculated that the forelimbs are caught in the mating spouse. Have argued that T. rex forelimbs are used to help fell on the ground when they stand up. Another possible hypothesis is that when the Tyrannosaurus killed jaw struggling with prey, the legs can be fixed to live prey. Finally, the assumption has been supported by biomechanical studies. Tyrannosaurus forelimbs are very thick, hard bones (Cortical bone), can withstand a greater capacity. Fully grown Tyrannosaurus biceps (Biceps brachii) to lift 199 kg in weight; biceps can also increase this value. Tyrannosaurus limited range of movement of forearm, shoulder and elbow can only be hand-made 40 to 45 degrees of rotation. The Deinonychus shoulder elbow and hand can make a 88-100 degree rotation rate of the human shoulder joint can make 360-degree rotation, hand elbow can make 165 degree rotation range. Tyrannosaurus heavy arm bones, and muscles, and limited rotation range, indicating that they may be used to quickly grab forelimbs struggling prey. In March 2005 the "Science" magazine, North Carolina State University 玛莉海格比史威 hereby (Mary Higby Schweitzer) and his colleagues announced that a T. rex leg bone found in the bone marrow the soft tissue. The fossil (No. MOR 1125, also known as "B-Rex") is found in the Hell Creek Group, the fossil age of 6800 million years ago. The fossil broken during shipment, and therefore did not in the normal way to save. Bifurcation has already identified the blood vessels, and fibrous bone tissue. In addition, the bone tissue of the small blood cells with similar organizations. The bone structure similar to the ostrich blood cells and blood vessels. The true identity of these organizations, researchers are not sure to make a conclusion. If these fossilized soft tissue is not replaced during his lifetime organizations, the protein can be used to indirectly obtain information on dinosaur DNA, because each protein encoded by specific genes. The traditional view is that soft tissue could not be saved, so in the past have not been related to the test, so there is no discovered soft tissue inside bones. Since this discovery since there are two other classes with a duck-billed dinosaur T. rex fossil has been found to have similar soft tissue. Research related to soft tissue findings prove that this bird is a close relative of Tyrannosaurus Division, while far away from the other modern animals. In April 2007 the "Science" magazine, Yue Hana Sarah (John Asara) and his colleagues pointed out that the bones of the Tyrannosaurus rex collagen protein with traces of 7, very similar to the chicken, again frogs and salamanders. In addition, the team has at least 16 million years ago in a mastodon fossil found traces of protein, overturned the traditional view, many scientists started to pay attention and make the biochemical fossils. Soft tissue in fossils previously found that the traditional view is that in the fossilization process, all the internal soft tissues have been replaced. Paleontologist at McGill University in Montreal Hansilasen (Hans Larsson), claimed that this discovery is a milestone in that it will enter the dinosaurs to the field of molecular biology. Thermoregulation: In 2004, the scientific journal "Nature" published a study, described an early tyrannosaur species superfamily, singular emperor dragon, fossils found in the Yixian Formation of China. Like many dinosaurs found in the Yixian Formation, emperor dragon's body covered by a layer of mulch, is considered the prototype of feathers. Tyrannosaurids Tyrannosaurus and other close relatives, has also been speculated that similar original feathers. However, in Canada and Mongolia have found fossils adult tyrannosaurids, with rare traces of skin, from a typical pebble-like scales formed. Is also possible that some parts of the body of young individuals covered by the original feathers, but the growth has not been saved after the last physical lack of partition, as many modern large mammals, such as elephant, hippopotamus, most of the rhino. According to Haldane rule (Haldane's principle), and body size compared to animals but has a smaller proportion of large surface area, they release heat at high temperature, low temperature and absorb heat; therefore easier to grow T. rex to maintain body heat. Therefore, the evolution of large animals from the warm environment, and used to isolate the heat of the feathers but will remain in the body of excessive heat, causing the body temperature overheating. Tyrannosaurids large dinosaurs, such as Tyrannosaurus rex, may have lost the original in the evolution of feathers, to meet the warm Cretaceous climate. More debate on the Raptors is their way of eating and moving way. Tyrannosaurus eating on the way is divided into predators and scavengers two views. Scientists are only through their feces fossils, the fossil (dinosaur footprints), and related animal teeth marks, eating patterns to infer Tyrannosaurus. As early as 1917, 劳伦斯赖博 described Gorgon, a dragon skeleton in good condition, they Gorgon under the dragon's teeth few wear and tear, the dragon proposed Gorgon is a kind of scavenger, and its Tyrannosaurus is close. This view was quickly overturned, because the teeth of theropod dinosaurs, replaced by fast. Since the T. rex was found since, most scientists agree that they are the kinds of predators; but many modern large predators in the absence of competitors, will take scavengers or by stealing other way to eat dead prey. The famous duck-billed dinosaur expert Jack Horner class (Jack Horner) is a species of Tyrannosaurus proposed scavengers, will not take the initiative to hunt animals, is a leading proponent of school scavengers. Horner in his book mainly about the view, but he is only a scientific meeting in an official reference to this assumption. Horner made the assumption based on the following characteristics: * Tyrannosaur teeth used to crush the bones, so that they bit off from the body, including bone marrow contains large quantities of food, animal bone marrow is usually the least nutritious parts. Short forelimbs to capture prey is difficult to form in the role. Kailun Qin (Karen Chin) and his colleagues in a number of coprolites found in bone fragments, which may be caused by Tyrannosaurus coprolites animals left, but they also pointed out that the teeth are not like tyrannosaur coyote the same bite, chew bones. * Tyrannosaurus rex with some fast moving prey, while T. rex walked instead of only running, but also shows T. rex was a scavenger. On the other hand, recent studies suggest that T. rex's speed though slower than large modern terrestrial predators, but large enough to catch up with the angle of the dragon under the duck-billed dinosaur class project. Tyrannosaurus also possible ambush faster way to hunt prey. Some other evidence shows the behavior of T. rex with the hunt. In 2006, Kent Stevens (KA Stevens) pointed out that the T. rex's eyes facing forward, so they have binocular vision, slightly better than the modern eagle. He also pointed out that with the evolution of those tyrannosaurs, their ability to better binocular vision. If the tyrannosaur, a scavenger, it is difficult to explain how binocular vision and preserved through natural _select_ion; as scavengers do not need stereo vision and depth perception. In modern animals, predators stereo vision was seen in animals; primates is an exception, because they need good vision to action in the branches, climbing. The discovery of "Sue," the excavation site, an Edmonton Dragon (Edmontosaurus annectens) found a fossil of the end of the healing of wounds, is caused by the T. rex dinosaur. The healing of the wounds showed active predator Tyrannosaurus rex is the species, rather than scavengers. The other iliac Triceratops had also found a healing bite mark, the union also had bite marks caused by the tyrannosaur. Paleontologist Bidelaisen (Peter Larson) in the test "Su" and found "Su" the fibula, caudal, facial bone fracture and healing that has traces, but there is one cervical vertebra on the other Tyrannosaurus embedded teeth. If Lai Sen found true, that will show the fight between Tyrannosaurus class act, possibly for food, courtship, and even cannibalism, but the real reason is still uncertain. However, a recent examination showed the wounds of these inferences, the majority are actually infected animals after the death or injury, only a small part of the reasoning for the diversity within the wound was a result of fighting behavior. Most scientists believe that T. rex is also the predators are scavengers, they can be present according to a source of food can be obtained. Modern carnivorous animals such as lions and hyenas, are often killed by other predators feed on carcasses of animals, showing tyrannosaur may have similar habits. Some scientists have suggested that T. rex was a scavenger if there are other dinosaurs during the Late Cretaceous of North America's top predators. Large prey in the area is a large dragon and birds foot headdress head. Tyrannosaurids the other animals have the same characteristics with the Raptors, only a small dinosaur Dromaeosauridae top predators are taken for granted. T. rex was a scavenger to support the scientists, is that the strong and huge Tyrannosaurus rex, from the smaller bodies of predators in the snatch. For the T. rex's moves, there are two controversial directions: Tyrannosaurus turning ability, and when the Raptors running in a straight line speed. Tyrannosaurus both bearing whether predators or merely a scavenger. A recent computer simulation study, based on Biomechanics Tyrannosaurus projected rotation is small, and very slow. According to the Royal Veterinary College University of London, the biomechanical expert 约翰哈钦森 (John Hutchinson) to say, Raptors to take 1-2 seconds to rotate 45 degrees, while the fully upright, lacking the tail of the human, may be in the second internal rotation of a circle. Tyrannosaurus weight because most of the focus away from it far, like a huge timber carried by adults, thus increasing the rotational inertia of rotating the inconvenience caused Tyrannosaurus; but Tyrannosaurus can back arched, the head , the legs to the body by as much as possible to reduce the moment of inertia. Can run on the Raptors, and can move more quickly, there are many conflicting studies. Walking speed for the Raptors, scientists have proposed various estimates, the majority of about 11 meters per second (40 kilometers per hour) or so, but a small part of the estimated value of 5 to 11 meters per second (17-40 km per hour), or up to 20 meters per second (70 kilometers per hour). The researchers calculated by different methods to estimate, because so far have found fossils of a large theropod footprints, almost all the mining way of walking, no one is running in, which may show a large theropod and can not run. Scientists believe that T. rex could run, they advocate the hollow bones of T. rex and other features can reduce body weight, allowing the maintenance of adult body weight of about 5 tons; and, like the ostrich and T. rex horse, has long legs and flexible Department, can significantly slow the pace but fast forward. In addition, some scientists believe that T. rex's leg muscles than any existing animals also big, to allow them to run high-speed (speed of 40-70 km.) In 1993, Jack Horner and Tang Leisen (Don Lessem) structure of the T. rex's legs compared with the existing animals, Tyrannosaurus can not be made to run, only be able to walk. Their femur and tibia ratio greater than one, as most of the large theropod dinosaur, Tyrannosaurus show moves to walk, like modern elephants. In addition, like a bird with similar tyrannosaurids Long Branch's feet. And other large theropod dinosaur feet, compared tyrannosaurids foot smaller, more slender. Tyrannosaurids its close connections between the metatarsal more secure, will be better than the early theropod dinosaurs, the more mobile energy transfer from the foot to the lower leg (toe the line in the animals, the function of the metatarsal bear part of the calf). When the Tyrannosaurus move, their legs and feet can make an efficient movement pattern. Holt has put forward in comparison to other large theropod dinosaurs, such as Allosaurus superfamily, Megalosaurus superfamily, new Ceratosaurus class, Tyrannosaurus is more suitable for high speed running. But this does not mean that T. rex could imagine in a general high-speed running, but running higher than the rate of prey. In 1998, Per Christensen (Per Christiansen) made Tyrannosaurus rex leg bone is only slightly stronger than the elephant's legs, which limits their top speed, and can not run. Christensen also pointed out the dinosaurs about mobile speed of 11 meters per second (40 kilometers per hour), about a human sprinter's speed. But he also pointed out that this estimate is based on many questionable assumptions counted out. In 1995, worked at Purdue University in Indiana, Fort Wayne campus paleontologist 詹姆斯法洛 (James Farlow) and his colleagues put forward the general weight of Tyrannosaurus rex is estimated to 6 to 8 tonnes, if they fall, the body will be a fatal blow. Their bodies will be about 60 m / s ² acceleration hit the ground, which may lead to their death. In addition, a small Tyrannosaurus forelimbs to support the body when not in the fall. Although the giraffe can run speed of 50 km per hour, but at this speed under the foot may be broken, even a safe place in the zoo this fall, will continue to cause fatal injuries. If necessary, the Raptors can still run, but will be at risk. In August 2007, a study using computer projections, the direct use of fossil data, calculate the maximum speed of Tyrannosaurus 8 meters per second (30 kilometers per hour). Slightly higher than the speed of a professional football player. And a sprinter's speed can run 12 meters per second. And this study also found that the weight of three kilograms of Compsognathus to 17.8 meters per second (about 70 km per hour) speed of movement, the fossil may be a young body. Support the hypothesis walking scientists, estimated top speed of Tyrannosaurus walking about 17 kilometers per hour, but still higher than this value and faster prey Tyrannosaurus contemporaries, such as duck-billed dinosaur class and angular dragon. In addition, some support for the predator Tyrannosaurus scientists think that Tyrannosaurus class running speed is not important, because their speed even slower, but still higher than their prey is also suitable for running or they are the way to ambush to attack faster prey. BOLON Tyrannosaurus Well-known eyewear brand English name: BOLON Chinese: Tyrannosaurus Birthday: July 28 Character: easy clear, passionate, a goodly modesty, the pursuit of change Variety Image: Beauty Bank, the charm of the eye, gentleman, drill girl ... ... BOLON the introduction of their own, reflecting the characteristics of its sunglasses and charm. Details BOLON Raptors official website http://www.bolon.cn/index.html
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Tyrannosaurus explore the situation in China
In the Turpan Basin, the location of Vertebrate Paleontology by the Chinese Academy of Sciences 1964-1966, to discover the many dinosaur fossils. Where there is a large, carnivorous dinosaurs - especially Tyrannosaurus. Particular was a large dinosaur meat, and tap into the specimen a total of five teeth with incomplete hip. It belongs to the tyrannosaurids. In the Late Cretaceous in Asia, especially T. rex is a widespread species. In 1972, people in the County of Henan Province, Song Ping Luan River Formation in the autumn Pa, to discover five large teeth and dinosaur authority officers Dong Zhiming in 1979, River Crest will be named Tyrannosaurus (T. rex). Raptors History class is in the ground all the animals, the most ferocious carnivores large and fall of rock is distributed in the Pa Tau Lake County area of Sichuan basin Crest Late Cretaceous strata from purple shale composition, the bottom gravel with brick red